US2305171A

US2305171A - Window sash operator

Info

Publication number: US2305171A
Application number: US352295A
Authority: US
Inventors: James E Jones
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-08-12
Filing date: 1940-08-12
Publication date: 1942-12-15
Anticipated expiration: 1959-12-15

Description

Dec. 15, 1942-. J, E, ONE 2,305,171

WINDOW SASH OPERATOR Filed Aug. 12, 1940 3 Sheets-Sheet 1 FIG? 'A'TToRNEx' Dc. 15, 1942. I J JONES I 2,305,171

wmnow SASH OPERATOR "Filed Aug. 12', 1940 s Sheets-Sheet 2 J7ME5 E Jon/5, v.

INVENTOR.

, ZZ$JWM4 ATTQRNEYI Dec. 15,1942.

J. E. JONES WINDOW SASH OPERATOR Filed Aug 12, 1940 .3 Sheets-Sheet 3 5. 77,155 Gig Ewan.

ATTORNEY I Patented Dec. 15, 1942 GFFICE UNITED STATS; 2,305,171

3 Claims.

. of a drum member having notches provided in the periphery thereof and providing means for maintaining hinged sash in any desired position.

Another object of the invention is the provision of a brake shoe located adjacent a rotatable drum member and frictionally engageable there with, and with the brake shoe providing means retarding the closing speed of hinged sash in connection therewith.

A further object of the invention is the provision of a rotatable drum member having a pivoted lever positioned adjacent thereto, and with the lever providing means for maintaining the drum in any desired position, and with one end of the lever adapted to engage a slidable brake shoe and force the same frictionally against the outer periphery of the drum. I

A still further object of the invention is the provision of a combination stop and brake mechanism which is positive in its operation, which is simple of construction, and which is economical to manufacture.

Other objects and advantages of the invention will suggest themselves in the course of the following description, and that which is new will be pointed out in the appended claims.

The most satisfactory manner of carrying out the principles of the invention in a practical, comprehensive, and efficient manner is shown in the accompanying three sheets of drawings, in

which:

Figure 1 is a side elevational detail showing the device in completely assembled condition, and

with the same being connected with a swingable overhead sash. y

Figure 2 is a side elevation of the rotatable drum and with the associated members being shown in engaged position, and with the manually operated wheel being omitted therefrom.

Figure 3 is a side elevation similar to Figure 2 but with the lever member being shown in disengaged relation with the rotatable drum.

Figure 4 is also a side elevation similar to Figures 2 and 3 but with the lever member in entaken from line 5-5 of Figure 2.

Figures 6, 7, and 8 are detail elevations simi- I lar to Figures 2, 3, and 4 respectively, except the parts are shown in larger detail.

Figure '9 is a side elevation of the supporting member on which the rotatable drum, the lever, and the brake shoe are mounted.

Figure 10 is a detail section, taken on line iii-l0 of Figure 9, and showing the guides provided for the brake shoe.

Figure 11 is an edge elevation of the brake shoe.

Figure 12 is a detail elevation of the brake shoe, taken from line l2-l 2 of Figure 11.

Like characters designate like parts throughout the several views.

In order that the construction, the operation, and the advantages of the invention may be more fully understood and appreciated, I will now take up a detailed description thereof in which I will set forth the same as fully and as comprehensively as I may.

' porting member.

In the drawings, l designates the tubular supporting member which is rigidly secured at its lower end to the floor construction through the member 2, and with the upper end thereof being secured to the roof joists 3 in the usual manner. The tubular shaft member 3 is journalled in a bearing located at the upper end of the sup- A sprocket 4 is rigidly secured on the member 3 and provides means for rotating the member 3. Pinion members 5 are rigidly secured on the member 3 adjacent each of the sash to be operated. A rack member 5 is extended through each of the pinion members 5 with the upper ends thereof bein secured to a respective sash 9 by means of the pivotal connections l. The sprocket 4 is rotated by means of the transmission chain ii) which extends around the sprocket l I, the sprocket being rotatably mounted on the shaft I2. One end of the shaft IE is rigidly secured in the hub portion I4 of the supporting casting is by means of threaded set screws 15.

The supporting casting I3 is rigidly secured on the tubular upright member I by means of threaded bolts l 5 passing through the member l3 and the clamping member ll.

The lower operating assembly is comprised of the sprocket II which is formed integrally with the hub portion of the hand wheel [8 and the drum member l9 which is rigidly secured thereto by means of the connecting member 20. The assembly just described being rotatably secured on the shaft [2 by means of the cotter 2| extending through the aperture l2.

The drum member H! has a comparatively flat outer periphery in which a plurality of voids 22 are formed.

The lever member 23 is pivotally secured to the supporting casting l3 by means of the rivet 24 extending through the aperture 28. The lever 23 has the engaging lug 25 formed on the under surface thereof with the same being adapted to engage the drum [9 at the locations of the voids 22. A stop 26 is also formed on the under side of the lever 23 and is adapted to contact the outer peripheral surface of the drum when the lug 25 is engaged in one of the voids 22. A fiinger 21 forms the extreme pivotal end of the lever 23, the

purpose of which will be hereinafter fully set forth. f

The brake shoe member has the curved portion 29 which has substantially the same curvature as the outer periphery of the drum l 9. A guide-engaging portion 30 is formed integrally with the curved portion 29 and provides for a sliding motion of the brake shoe between the upper and

lower guides

32 and 33 respectively of the supporting member l3. A boss 3| is formed on the convex surface of the brake shoe for engagement of the the hand wheel l8 by means of the ha l 5:,

her H3. The turning of the hand wheel causes the rotation of the sprocket 4 through the medium of the connecting chain In. The sprocket 4, being rigidly secured on the shaft 3 transmits rotary motion thereto and carries the pinion 5 therewith causing the rack 6 to be moved upwardly or downwardly and thereby actuating the sash 9 accordingly.

When it is desired to stop the sash in any position, the lever 23 is lowered until the lug 25 engages a void 22 in the periphery of the drum l9. Disengagement of the lug 25 with the voids 22 when the sash I9 is in open position permits the sash to close by its own weight. It is necessary that the closing movement of the sash be retarded,

and it is for this purpose the brake shoe is provided.

It will be noted that when the lever 23 is positioned as shown in Figures 2, 3, 6, and '7, the finger 21 does not engage the boss 3|. However, when the lever is lifted to the position as shown in Figures 4 and 8, the finger 21 is brought into engagement with the boss 3| and a further lifting motion of the lever causes the portion 29 to frictionally contact the outer periphery of the drum l9 and retard the rotation thereof.

t will be noted that the guide portion 30 of the brake shoe is guided in its engaging and disengaging action by the upper and

lower guides

32 and 33 respectively of the supporting member l3. The guide portion 38 is slidably positioned between the supporting member I3 and the finger 21 of the lever 23, but is not secured to either of the members.

When the lever 23 is again returned to either of the positions'as shown in Figures 2, 3, 6, and 7 the finger 21 is disengaged from the boss 3i and the friction of the brake shoe against the drum is substantially nil.

It will be obvious from the above that the upper portion of the operating mechanism is of the conventional type, but the lower portion thereof is new inasmuch as the same provides a stop or locking means, a braking means to retard the closing action of the operated sash, and a free movement which permits the raising of the sash by manual operation.

It is to be understood that minor changes may be made in the several parts and in the details herein shown and described, insofar as the changes may fall within the scope of the appended claims.

Having now fully shown and described the invention, what I claim and desire to secure by Letters Patent of the United States is:

1. In a sash operating device, a supporting member having a drum rotatably mounted thereon, a brake shoe frictionally engageable with the outer periphery of the drum and slidable towards and away from the drum between a pair of guides, a pivoted lever having a lug formed integrally therewith and engageable with voids formed in the periphery of the drum, a finger formed integrally with one end of the pivoted lever and adapted to apply pressure against the brake shoe in the direction of the drum, with the finger being unattached to the brake shoe, and with the brake shoe being free to continuously contact the periphery of the drum. 7

2. In a sash operating device having a rotatable drum, a pair of guides formed adjacent the. periphery of the drum, a brake shoe slidably positioned in the guides and engageable with the peripherial surface of the drum with the brake shoe being freely slidable within the guides to continuously contact the periphery of the drum, and means disengaged with the brak shoe and forcing the same into braking engagement with the peripherial surface of the drum.

3. In a sash operating device, a rotatable drum, a pivoted lever adapted to engage the drum, 2. stop formed on the lever adapted to engage the peripherial surface of the drum, a brake shoe freely slidable between a pair of guides and frictionally engaging the peripherial surface of the drum, and means formed on the end of the pivoted lever forcing the brake shoe into braking engagement with the peripherial surface of the drum when the lever is disengaged with the drum.

JAMES E. JONES.